MinorLeagueNetwork.com not only targets the top prospects in the country, we deliver their first baseball cards ever printed, too.

Like past summer studs Randy Johnson, Tom Seaver and Jason Giambi, all of the following future stars developed their skills at one time in a college summer league and now are primed for the big show. That's how we discovered them.

Here are the ones we've been targeting. You should follow them, too:

Possibly the top power-hitter in the National League, Paul Goldschmidt was named the 2011 Minor League Player of the Year by USA Today. Goldschmidt's first card is included in the 2008 Anchorage Bucs (Alaska) team set.

Tyson Ross and Jason Castro have each made Major League Baseball's All-Star Game. The 2006 Anchorage Bucs (Alaska) team set has both players' first cards ever printed.

Garrett Richards and Josh Harrison were both selected in the first round of the 2008 draft. Both players' first cards are included in the 2007 Cotuit Kettleers (Cape Cod) team set.

Jason Kipnis may be the best hitting second baseman in baseball. Kipnis appears in the 2008 Cotuit (Cape Cod) team set, along with Drew Storen.

A 14th-round pick in 2008, David Phelps has blossomed into one of the Yankees' top pitching prospect. His first card is included in the 2006 Mat-Su Miners (Alaska) team set.

A name to remember in 2012? Stephen Piscotty of Stanford, one of the Cape Cod League's best prospects in 2011. The 2010 Peninsula Oilers team set (Alaska) contains his first card ever.

Fresno State's Tommy Mendonca, was the hero of the College World Series and was drafted by the Rangers. His first card is in the 2007 Anchorage Bucs (Alaska) team set.

One of the minor leagues' most successful pitching prospects, Garrertt Richards, made his major league debut in 2011 with the Anaheim Angels. His first card is in the 2007 Cotuit Kettleers (Cape Cod) team set.

The top hitting senior prospect in 2012? It may be James Ramsey of Florida State, whom the Twins tried to sign; but Ramsey ultimately turned down the club's reported offer of $500,000. Ramsey's first card is a 2009 Mat-Su Miners (Alaska) issue.

Discover What's Next...Now

With extremely low print runs and ultra-talented prospects, these summer league cards are one of the best investments in the hobby. They're also recognized by major grading companies like BGS and PSA.

Imagine what a Roger Clemens summer league issue would be worth today?

The 2006 Anchorage Bucs may have finished second in the Alaska Baseball League, but this team is rising to the top when it comes to pro talent.

In addition to Ike Davis and JasonCastro (see above), this issue features the first-ever cards of numerous high-round draft choices : RHP Andrew Liebel (Blue Jays) and 1B Shane Peterson (A's), both from Long Beach State; and fire-balling reliever Matt Gorgen (Rays); as well as cards of two players who have already made it to the major leagues -- Tyson Ross (A's) and UC Irvine's Bryan Petersen (Marlins).

The team set also includes first-ever cards of Taiwanese hurlers Po-Yu Lin and Cheng-Lung Lo. Buy it now >>

PLUS:Next Wave

One Hurler Makes Bigs, Two More to Follow

Few organizations develop pitchers like the Florida Marlins - Josh Beckett, Scott Olsen, Dontrelle Willis, etc. - and the next wave of arms will come from the 2005 draft.

The 2005 Jamestown Jammers Update set (pictured) includes the first-ever cards of three first round picks: Aaron Thompson, Ryan Tucker, and Sean West. Tucker and West have already pitched in the major leagues. $5.95

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MinorLeagueNetwork.com has located cards for former players; family members of current and former players; and of course, collectors from around the world. Our inventory is one of the largest in North America. We have more than 35,000 singles from 1980 to present!